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group___i_o.html

group___i_o.html 26 KB
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  9.     <title>Generic Image Library: I/O</title>
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  46. <div class="title">I/O</div>  </div>
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    48. 

  48. <div class="contents">
    49. 

  49. 

  50. <p>Support for reading and writing images to file.  
    51. 

  51. <a href="#details">More...</a></p>
    52. 

  52. <table class="memberdecls">
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  53. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="groups"></a>
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  54. Modules</h2></td></tr>
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  55. <tr class="memitem:group___j_p_e_g___i_o"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___j_p_e_g___i_o.html">JPEG I/O</a></td></tr>
    56. 

  56. <tr class="memdesc:group___j_p_e_g___i_o"><td class="mdescLeft">&#160;</td><td class="mdescRight">Support for reading and writing JPEG image files. <br /></td></tr>
    57. 

  57. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
    58. 

  58. <tr class="memitem:group___t_i_f_f___i_o"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___t_i_f_f___i_o.html">TIFF I/O</a></td></tr>
    59. 

  59. <tr class="memdesc:group___t_i_f_f___i_o"><td class="mdescLeft">&#160;</td><td class="mdescRight">Support for reading and writing TIFF image files. <br /></td></tr>
    60. 

  60. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
    61. 

  61. <tr class="memitem:group___p_n_g___i_o"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_n_g___i_o.html">PNG I/O</a></td></tr>
    62. 

  62. <tr class="memdesc:group___p_n_g___i_o"><td class="mdescLeft">&#160;</td><td class="mdescRight">Support for reading and writing PNG image files. <br /></td></tr>
    63. 

  63. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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  65. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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  66. Functions</h2></td></tr>
    67. 

  67. <tr class="memitem:ga48e4b8fecad8dd6a535eb8ff3f426a4c"><td class="memTemplParams" colspan="2">template&lt;typename Reader , typename Image &gt; </td></tr>
    68. 

  68. <tr class="memitem:ga48e4b8fecad8dd6a535eb8ff3f426a4c"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group___i_o.html#ga48e4b8fecad8dd6a535eb8ff3f426a4c">read_and_convert_image</a> (Reader &amp;reader, Image &amp;img, typename std::enable_if&lt; mp11::mp_and&lt; detail::is_reader&lt; Reader &gt;, is_format_tag&lt; typename Reader::format_tag_t &gt; &gt;::value &gt;::type *=nullptr)</td></tr>
    69. 

  69. <tr class="memdesc:ga48e4b8fecad8dd6a535eb8ff3f426a4c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Reads and color-converts an image. Image memory is allocated.  <a href="group___i_o.html#ga48e4b8fecad8dd6a535eb8ff3f426a4c">More...</a><br /></td></tr>
    70. 

  70. <tr class="separator:ga48e4b8fecad8dd6a535eb8ff3f426a4c"><td class="memSeparator" colspan="2">&#160;</td></tr>
    71. 

  71. <tr class="memitem:gaf30e030fab17abdd159c08478008cde1"><td class="memTemplParams" colspan="2">template&lt;typename Reader , typename View &gt; </td></tr>
    72. 

  72. <tr class="memitem:gaf30e030fab17abdd159c08478008cde1"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group___i_o.html#gaf30e030fab17abdd159c08478008cde1">read_and_convert_view</a> (Reader &amp;reader, View const &amp;view, typename std::enable_if&lt; mp11::mp_and&lt; detail::is_reader&lt; Reader &gt;, is_format_tag&lt; typename Reader::format_tag_t &gt; &gt;::value &gt;::type *=nullptr)</td></tr>
    73. 

  73. <tr class="memdesc:gaf30e030fab17abdd159c08478008cde1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Reads and color-converts an image view. No memory is allocated.  <a href="group___i_o.html#gaf30e030fab17abdd159c08478008cde1">More...</a><br /></td></tr>
    74. 

  74. <tr class="separator:gaf30e030fab17abdd159c08478008cde1"><td class="memSeparator" colspan="2">&#160;</td></tr>
    75. 

  75. <tr class="memitem:gac1e65b2ad8cd28fe8d694f1663df0d78"><td class="memTemplParams" colspan="2">template&lt;typename Reader , typename Image &gt; </td></tr>
    76. 

  76. <tr class="memitem:gac1e65b2ad8cd28fe8d694f1663df0d78"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group___i_o.html#gac1e65b2ad8cd28fe8d694f1663df0d78">read_image</a> (Reader reader, Image &amp;img, typename std::enable_if&lt; mp11::mp_and&lt; detail::is_reader&lt; Reader &gt;, is_format_tag&lt; typename Reader::format_tag_t &gt;, <a class="el" href="structboost_1_1gil_1_1is__read__supported.html">is_read_supported</a>&lt; typename get_pixel_type&lt; typename Image::view_t &gt;::type, typename Reader::format_tag_t &gt; &gt;::value &gt;::type *=nullptr)</td></tr>
    77. 

  77. <tr class="memdesc:gac1e65b2ad8cd28fe8d694f1663df0d78"><td class="mdescLeft">&#160;</td><td class="mdescRight">Reads an image without conversion. Image memory is allocated.  <a href="group___i_o.html#gac1e65b2ad8cd28fe8d694f1663df0d78">More...</a><br /></td></tr>
    78. 

  78. <tr class="separator:gac1e65b2ad8cd28fe8d694f1663df0d78"><td class="memSeparator" colspan="2">&#160;</td></tr>
    79. 

  79. <tr class="memitem:ga465aa7d369af94dd3fdfe98d6c3f833b"><td class="memTemplParams" colspan="2">template&lt;typename Device , typename FormatTag &gt; </td></tr>
    80. 

  80. <tr class="memitem:ga465aa7d369af94dd3fdfe98d6c3f833b"><td class="memTemplItemLeft" align="right" valign="top">auto&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group___i_o.html#ga465aa7d369af94dd3fdfe98d6c3f833b">read_image_info</a> (Device &amp;file, image_read_settings&lt; FormatTag &gt; const &amp;settings, typename std::enable_if&lt; mp11::mp_and&lt; detail::is_adaptable_input_device&lt; FormatTag, Device &gt;, is_format_tag&lt; FormatTag &gt; &gt;::value &gt;::type *=nullptr) -&gt; typename <a class="el" href="structboost_1_1gil_1_1get__reader__backend.html">get_reader_backend</a>&lt; Device, FormatTag &gt;::type</td></tr>
    81. 

  81. <tr class="memdesc:ga465aa7d369af94dd3fdfe98d6c3f833b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns the image format backend. Backend is format specific.  <a href="group___i_o.html#ga465aa7d369af94dd3fdfe98d6c3f833b">More...</a><br /></td></tr>
    82. 

  82. <tr class="separator:ga465aa7d369af94dd3fdfe98d6c3f833b"><td class="memSeparator" colspan="2">&#160;</td></tr>
    83. 

  83. <tr class="memitem:ga9b5ae3d12c73aa1d81245fd5f8772847"><td class="memTemplParams" colspan="2">template&lt;typename Reader , typename View &gt; </td></tr>
    84. 

  84. <tr class="memitem:ga9b5ae3d12c73aa1d81245fd5f8772847"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group___i_o.html#ga9b5ae3d12c73aa1d81245fd5f8772847">read_view</a> (Reader reader, View const &amp;view, typename std::enable_if&lt; mp11::mp_and&lt; detail::is_reader&lt; Reader &gt;, typename is_format_tag&lt; typename Reader::format_tag_t &gt;::type, typename <a class="el" href="structboost_1_1gil_1_1is__read__supported.html">is_read_supported</a>&lt; typename get_pixel_type&lt; View &gt;::type, typename Reader::format_tag_t &gt;::type &gt;::value &gt;::type *=nullptr)</td></tr>
    85. 

  85. <tr class="memdesc:ga9b5ae3d12c73aa1d81245fd5f8772847"><td class="mdescLeft">&#160;</td><td class="mdescRight">Reads an image view without conversion. No memory is allocated.  <a href="group___i_o.html#ga9b5ae3d12c73aa1d81245fd5f8772847">More...</a><br /></td></tr>
    86. 

  86. <tr class="separator:ga9b5ae3d12c73aa1d81245fd5f8772847"><td class="memSeparator" colspan="2">&#160;</td></tr>
    87. 

  87. <tr class="memitem:ga8e840ef6099b9b654610c96038f57fa6"><td class="memTemplParams" colspan="2"><a id="ga8e840ef6099b9b654610c96038f57fa6"></a>
    88. 

  88. template&lt;typename Writer , typename View &gt; </td></tr>
    89. 

  89. <tr class="memitem:ga8e840ef6099b9b654610c96038f57fa6"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><b>write_view</b> (Writer &amp;writer, View const &amp;view, typename std::enable_if&lt; mp11::mp_and&lt; typename detail::is_writer&lt; Writer &gt;::type, typename is_format_tag&lt; typename Writer::format_tag_t &gt;::type, typename is_write_supported&lt; typename get_pixel_type&lt; View &gt;::type, typename Writer::format_tag_t &gt;::type &gt;::value &gt;::type *=nullptr)</td></tr>
    90. 

  90. <tr class="separator:ga8e840ef6099b9b654610c96038f57fa6"><td class="memSeparator" colspan="2">&#160;</td></tr>
    91. 

  91. <tr class="memitem:ga31c6d70facdbf5381586074d21c8d0e7"><td class="memTemplParams" colspan="2"><a id="ga31c6d70facdbf5381586074d21c8d0e7"></a>
    92. 

  92. template&lt;typename Device , typename View , typename FormatTag &gt; </td></tr>
    93. 

  93. <tr class="memitem:ga31c6d70facdbf5381586074d21c8d0e7"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><b>write_view</b> (Device &amp;device, View const &amp;view, FormatTag const &amp;tag, typename std::enable_if&lt; mp11::mp_and&lt; typename <a class="el" href="structboost_1_1gil_1_1detail_1_1is__write__device.html">detail::is_write_device</a>&lt; FormatTag, Device &gt;::type, typename is_format_tag&lt; FormatTag &gt;::type, typename is_write_supported&lt; typename get_pixel_type&lt; View &gt;::type, FormatTag &gt;::type &gt;::value &gt;::type *=nullptr)</td></tr>
    94. 

  94. <tr class="separator:ga31c6d70facdbf5381586074d21c8d0e7"><td class="memSeparator" colspan="2">&#160;</td></tr>
    95. 

  95. <tr class="memitem:gadb22d45dbc5665cd2f7be4154874d767"><td class="memTemplParams" colspan="2"><a id="gadb22d45dbc5665cd2f7be4154874d767"></a>
    96. 

  96. template&lt;typename String , typename View , typename FormatTag &gt; </td></tr>
    97. 

  97. <tr class="memitem:gadb22d45dbc5665cd2f7be4154874d767"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><b>write_view</b> (String const &amp;file_name, View const &amp;view, FormatTag const &amp;tag, typename std::enable_if&lt; mp11::mp_and&lt; typename detail::is_supported_path_spec&lt; String &gt;::type, typename is_format_tag&lt; FormatTag &gt;::type, typename is_write_supported&lt; typename get_pixel_type&lt; View &gt;::type, FormatTag &gt;::type &gt;::value &gt;::type *=nullptr)</td></tr>
    98. 

  98. <tr class="separator:gadb22d45dbc5665cd2f7be4154874d767"><td class="memSeparator" colspan="2">&#160;</td></tr>
    99. 

  99. <tr class="memitem:ga470d1ef2c232560cfa143a235a5d1fbe"><td class="memTemplParams" colspan="2"><a id="ga470d1ef2c232560cfa143a235a5d1fbe"></a>
    100. 

  100. template&lt;typename Device , typename View , typename FormatTag , typename Log &gt; </td></tr>
    101. 

  101. <tr class="memitem:ga470d1ef2c232560cfa143a235a5d1fbe"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><b>write_view</b> (Device &amp;device, View const &amp;view, image_write_info&lt; FormatTag, Log &gt; const &amp;info, typename std::enable_if&lt; mp11::mp_and&lt; typename <a class="el" href="structboost_1_1gil_1_1detail_1_1is__write__device.html">detail::is_write_device</a>&lt; FormatTag, Device &gt;::type, typename is_format_tag&lt; FormatTag &gt;::type, typename is_write_supported&lt; typename get_pixel_type&lt; View &gt;::type, FormatTag &gt;::type &gt;::value &gt;::type *=nullptr)</td></tr>
    102. 

  102. <tr class="separator:ga470d1ef2c232560cfa143a235a5d1fbe"><td class="memSeparator" colspan="2">&#160;</td></tr>
    103. 

  103. <tr class="memitem:gad1818e8779fe3c702cff7a56f923beb0"><td class="memTemplParams" colspan="2"><a id="gad1818e8779fe3c702cff7a56f923beb0"></a>
    104. 

  104. template&lt;typename String , typename View , typename FormatTag , typename Log &gt; </td></tr>
    105. 

  105. <tr class="memitem:gad1818e8779fe3c702cff7a56f923beb0"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><b>write_view</b> (String const &amp;file_name, View const &amp;view, image_write_info&lt; FormatTag, Log &gt; const &amp;info, typename std::enable_if&lt; mp11::mp_and&lt; typename detail::is_supported_path_spec&lt; String &gt;::type, typename is_format_tag&lt; FormatTag &gt;::type, typename is_write_supported&lt; typename get_pixel_type&lt; View &gt;::type, FormatTag &gt;::type &gt;::value &gt;::type *=nullptr)</td></tr>
    106. 

  106. <tr class="separator:gad1818e8779fe3c702cff7a56f923beb0"><td class="memSeparator" colspan="2">&#160;</td></tr>
    107. 

  107. <tr class="memitem:ga7dd99f2010b46f211aca3d61debadcae"><td class="memTemplParams" colspan="2"><a id="ga7dd99f2010b46f211aca3d61debadcae"></a>
    108. 

  108. template&lt;typename Device , typename Views , typename FormatTag , typename Log &gt; </td></tr>
    109. 

  109. <tr class="memitem:ga7dd99f2010b46f211aca3d61debadcae"><td class="memTemplItemLeft" align="right" valign="top">void&#160;</td><td class="memTemplItemRight" valign="bottom"><b>write_view</b> (Device &amp;device, <a class="el" href="classboost_1_1gil_1_1any__image__view.html">any_image_view</a>&lt; Views &gt; const &amp;views, image_write_info&lt; FormatTag, Log &gt; const &amp;info, typename std::enable_if&lt; mp11::mp_and&lt; typename <a class="el" href="structboost_1_1gil_1_1detail_1_1is__write__device.html">detail::is_write_device</a>&lt; FormatTag, Device &gt;::type, typename is_format_tag&lt; FormatTag &gt;::type &gt;::value &gt;::type *=0)</td></tr>
    110. 

  110. <tr class="separator:ga7dd99f2010b46f211aca3d61debadcae"><td class="memSeparator" colspan="2">&#160;</td></tr>
    111. 

  111. </table>
    112. 

  112. <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
    113. 

  113. <p>Support for reading and writing images to file. </p>
    114. 

  114. <h2 class="groupheader">Function Documentation</h2>
    115. 

  115. <a id="ga48e4b8fecad8dd6a535eb8ff3f426a4c"></a>
    116. 

  116. <h2 class="memtitle"><span class="permalink"><a href="#ga48e4b8fecad8dd6a535eb8ff3f426a4c">&#9670;&nbsp;</a></span>read_and_convert_image()</h2>
    117. 

  117. 

  118. <div class="memitem">
    119. 

  119. <div class="memproto">
    120. 

  120. <table class="mlabels">
    121. 

  121.   <tr>
    122. 

  122.   <td class="mlabels-left">
    123. 

  123.       <table class="memname">
    124. 

  124.         <tr>
    125. 

  125.           <td class="memname">void boost::gil::read_and_convert_image </td>
    126. 

  126.           <td>(</td>
    127. 

  127.           <td class="paramtype">Reader &amp;&#160;</td>
    128. 

  128.           <td class="paramname"><em>reader</em>, </td>
    129. 

  129.         </tr>
    130. 

  130.         <tr>
    131. 

  131.           <td class="paramkey"></td>
    132. 

  132.           <td></td>
    133. 

  133.           <td class="paramtype">Image &amp;&#160;</td>
    134. 

  134.           <td class="paramname"><em>img</em>, </td>
    135. 

  135.         </tr>
    136. 

  136.         <tr>
    137. 

  137.           <td class="paramkey"></td>
    138. 

  138.           <td></td>
    139. 

  139.           <td class="paramtype">typename std::enable_if&lt; mp11::mp_and&lt; detail::is_reader&lt; Reader &gt;, is_format_tag&lt; typename Reader::format_tag_t &gt; &gt;::value &gt;::type *&#160;</td>
    140. 

  140.           <td class="paramname"> = <code>nullptr</code>&#160;</td>
    141. 

  141.         </tr>
    142. 

  142.         <tr>
    143. 

  143.           <td></td>
    144. 

  144.           <td>)</td>
    145. 

  145.           <td></td><td></td>
    146. 

  146.         </tr>
    147. 

  147.       </table>
    148. 

  148.   </td>
    149. 

  149.   <td class="mlabels-right">
    150. 

  150. <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
    151. 

  151.   </tr>
    152. 

  152. </table>
    153. 

  153. </div><div class="memdoc">
    154. 

  154. 

  155. <p>Reads and color-converts an image. Image memory is allocated. </p>
    156. 

  156. <dl class="params"><dt>Parameters</dt><dd>
    157. 

  157.   <table class="params">
    158. 

  158.     <tr><td class="paramname">reader</td><td>An image reader. </td></tr>
    159. 

  159.     <tr><td class="paramname">img</td><td>The image in which the data is read into. </td></tr>
    160. 

  160.     <tr><td class="paramname">settings</td><td>Specifies read settings depending on the image format. </td></tr>
    161. 

  161.     <tr><td class="paramname">cc</td><td>Color converter function object. </td></tr>
    162. 

  162.   </table>
    163. 

  163.   </dd>
    164. 

  164. </dl>
    165. 

  165. <dl class="exception"><dt>Exceptions</dt><dd>
    166. 

  166.   <table class="exception">
    167. 

  167.     <tr><td class="paramname">std::ios_base::failure</td><td></td></tr>
    168. 

  168.   </table>
    169. 

  169.   </dd>
    170. 

  170. </dl>
    171. 

  171. 

  172. </div>
    173. 

  173. </div>
    174. 

  174. <a id="gaf30e030fab17abdd159c08478008cde1"></a>
    175. 

  175. <h2 class="memtitle"><span class="permalink"><a href="#gaf30e030fab17abdd159c08478008cde1">&#9670;&nbsp;</a></span>read_and_convert_view()</h2>
    176. 

  176. 

  177. <div class="memitem">
    178. 

  178. <div class="memproto">
    179. 

  179. <table class="mlabels">
    180. 

  180.   <tr>
    181. 

  181.   <td class="mlabels-left">
    182. 

  182.       <table class="memname">
    183. 

  183.         <tr>
    184. 

  184.           <td class="memname">void boost::gil::read_and_convert_view </td>
    185. 

  185.           <td>(</td>
    186. 

  186.           <td class="paramtype">Reader &amp;&#160;</td>
    187. 

  187.           <td class="paramname"><em>reader</em>, </td>
    188. 

  188.         </tr>
    189. 

  189.         <tr>
    190. 

  190.           <td class="paramkey"></td>
    191. 

  191.           <td></td>
    192. 

  192.           <td class="paramtype">View const &amp;&#160;</td>
    193. 

  193.           <td class="paramname"><em>view</em>, </td>
    194. 

  194.         </tr>
    195. 

  195.         <tr>
    196. 

  196.           <td class="paramkey"></td>
    197. 

  197.           <td></td>
    198. 

  198.           <td class="paramtype">typename std::enable_if&lt; mp11::mp_and&lt; detail::is_reader&lt; Reader &gt;, is_format_tag&lt; typename Reader::format_tag_t &gt; &gt;::value &gt;::type *&#160;</td>
    199. 

  199.           <td class="paramname"> = <code>nullptr</code>&#160;</td>
    200. 

  200.         </tr>
    201. 

  201.         <tr>
    202. 

  202.           <td></td>
    203. 

  203.           <td>)</td>
    204. 

  204.           <td></td><td></td>
    205. 

  205.         </tr>
    206. 

  206.       </table>
    207. 

  207.   </td>
    208. 

  208.   <td class="mlabels-right">
    209. 

  209. <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
    210. 

  210.   </tr>
    211. 

  211. </table>
    212. 

  212. </div><div class="memdoc">
    213. 

  213. 

  214. <p>Reads and color-converts an image view. No memory is allocated. </p>
    215. 

  215. <dl class="params"><dt>Parameters</dt><dd>
    216. 

  216.   <table class="params">
    217. 

  217.     <tr><td class="paramname">reader</td><td>An image reader. </td></tr>
    218. 

  218.     <tr><td class="paramname">img</td><td>The image in which the data is read into. </td></tr>
    219. 

  219.     <tr><td class="paramname">settings</td><td>Specifies read settings depending on the image format. </td></tr>
    220. 

  220.     <tr><td class="paramname">cc</td><td>Color converter function object. </td></tr>
    221. 

  221.   </table>
    222. 

  222.   </dd>
    223. 

  223. </dl>
    224. 

  224. <dl class="exception"><dt>Exceptions</dt><dd>
    225. 

  225.   <table class="exception">
    226. 

  226.     <tr><td class="paramname">std::ios_base::failure</td><td></td></tr>
    227. 

  227.   </table>
    228. 

  228.   </dd>
    229. 

  229. </dl>
    230. 

  230. 

  231. </div>
    232. 

  232. </div>
    233. 

  233. <a id="gac1e65b2ad8cd28fe8d694f1663df0d78"></a>
    234. 

  234. <h2 class="memtitle"><span class="permalink"><a href="#gac1e65b2ad8cd28fe8d694f1663df0d78">&#9670;&nbsp;</a></span>read_image()</h2>
    235. 

  235. 

  236. <div class="memitem">
    237. 

  237. <div class="memproto">
    238. 

  238. <table class="mlabels">
    239. 

  239.   <tr>
    240. 

  240.   <td class="mlabels-left">
    241. 

  241.       <table class="memname">
    242. 

  242.         <tr>
    243. 

  243.           <td class="memname">void boost::gil::read_image </td>
    244. 

  244.           <td>(</td>
    245. 

  245.           <td class="paramtype">Reader&#160;</td>
    246. 

  246.           <td class="paramname"><em>reader</em>, </td>
    247. 

  247.         </tr>
    248. 

  248.         <tr>
    249. 

  249.           <td class="paramkey"></td>
    250. 

  250.           <td></td>
    251. 

  251.           <td class="paramtype">Image &amp;&#160;</td>
    252. 

  252.           <td class="paramname"><em>img</em>, </td>
    253. 

  253.         </tr>
    254. 

  254.         <tr>
    255. 

  255.           <td class="paramkey"></td>
    256. 

  256.           <td></td>
    257. 

  257.           <td class="paramtype">typename std::enable_if&lt; mp11::mp_and&lt; detail::is_reader&lt; Reader &gt;, is_format_tag&lt; typename Reader::format_tag_t &gt;, <a class="el" href="structboost_1_1gil_1_1is__read__supported.html">is_read_supported</a>&lt; typename get_pixel_type&lt; typename Image::view_t &gt;::type, typename Reader::format_tag_t &gt; &gt;::value &gt;::type *&#160;</td>
    258. 

  258.           <td class="paramname"> = <code>nullptr</code>&#160;</td>
    259. 

  259.         </tr>
    260. 

  260.         <tr>
    261. 

  261.           <td></td>
    262. 

  262.           <td>)</td>
    263. 

  263.           <td></td><td></td>
    264. 

  264.         </tr>
    265. 

  265.       </table>
    266. 

  266.   </td>
    267. 

  267.   <td class="mlabels-right">
    268. 

  268. <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
    269. 

  269.   </tr>
    270. 

  270. </table>
    271. 

  271. </div><div class="memdoc">
    272. 

  272. 

  273. <p>Reads an image without conversion. Image memory is allocated. </p>
    274. 

  274. <dl class="params"><dt>Parameters</dt><dd>
    275. 

  275.   <table class="params">
    276. 

  276.     <tr><td class="paramname">reader</td><td>An image reader. </td></tr>
    277. 

  277.     <tr><td class="paramname">img</td><td>The image in which the data is read into. Must satisfy <a class="el" href="structboost_1_1gil_1_1is__read__supported.html">is_read_supported</a> metafunction. </td></tr>
    278. 

  278.   </table>
    279. 

  279.   </dd>
    280. 

  280. </dl>
    281. 

  281. <dl class="exception"><dt>Exceptions</dt><dd>
    282. 

  282.   <table class="exception">
    283. 

  283.     <tr><td class="paramname">std::ios_base::failure</td><td></td></tr>
    284. 

  284.   </table>
    285. 

  285.   </dd>
    286. 

  286. </dl>
    287. 

  287. 

  288. </div>
    289. 

  289. </div>
    290. 

  290. <a id="ga465aa7d369af94dd3fdfe98d6c3f833b"></a>
    291. 

  291. <h2 class="memtitle"><span class="permalink"><a href="#ga465aa7d369af94dd3fdfe98d6c3f833b">&#9670;&nbsp;</a></span>read_image_info()</h2>
    292. 

  292. 

  293. <div class="memitem">
    294. 

  294. <div class="memproto">
    295. 

  295. <table class="mlabels">
    296. 

  296.   <tr>
    297. 

  297.   <td class="mlabels-left">
    298. 

  298.       <table class="memname">
    299. 

  299.         <tr>
    300. 

  300.           <td class="memname">auto boost::gil::read_image_info </td>
    301. 

  301.           <td>(</td>
    302. 

  302.           <td class="paramtype">Device &amp;&#160;</td>
    303. 

  303.           <td class="paramname"><em>file</em>, </td>
    304. 

  304.         </tr>
    305. 

  305.         <tr>
    306. 

  306.           <td class="paramkey"></td>
    307. 

  307.           <td></td>
    308. 

  308.           <td class="paramtype">image_read_settings&lt; FormatTag &gt; const &amp;&#160;</td>
    309. 

  309.           <td class="paramname"><em>settings</em>, </td>
    310. 

  310.         </tr>
    311. 

  311.         <tr>
    312. 

  312.           <td class="paramkey"></td>
    313. 

  313.           <td></td>
    314. 

  314.           <td class="paramtype">typename std::enable_if&lt; mp11::mp_and&lt; detail::is_adaptable_input_device&lt; FormatTag, Device &gt;, is_format_tag&lt; FormatTag &gt; &gt;::value &gt;::type *&#160;</td>
    315. 

  315.           <td class="paramname"> = <code>nullptr</code>&#160;</td>
    316. 

  316.         </tr>
    317. 

  317.         <tr>
    318. 

  318.           <td></td>
    319. 

  319.           <td>)</td>
    320. 

  320.           <td></td><td> -&gt; typename <a class="el" href="structboost_1_1gil_1_1get__reader__backend.html">get_reader_backend</a>&lt;Device, FormatTag&gt;::type
    321. 

  321. </td>
    322. 

  322.         </tr>
    323. 

  323.       </table>
    324. 

  324.   </td>
    325. 

  325.   <td class="mlabels-right">
    326. 

  326. <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
    327. 

  327.   </tr>
    328. 

  328. </table>
    329. 

  329. </div><div class="memdoc">
    330. 

  330. 

  331. <p>Returns the image format backend. Backend is format specific. </p>
    332. 

  332. <dl class="params"><dt>Parameters</dt><dd>
    333. 

  333.   <table class="params">
    334. 

  334.     <tr><td class="paramname">file</td><td>It's a device. Must satisfy is_adaptable_input_device metafunction. </td></tr>
    335. 

  335.     <tr><td class="paramname">settings</td><td>Specifies read settings depending on the image format. </td></tr>
    336. 

  336.   </table>
    337. 

  337.   </dd>
    338. 

  338. </dl>
    339. 

  339. <dl class="section return"><dt>Returns</dt><dd>image_read_info object dependent on the image format. </dd></dl>
    340. 

  340. <dl class="exception"><dt>Exceptions</dt><dd>
    341. 

  341.   <table class="exception">
    342. 

  342.     <tr><td class="paramname">std::ios_base::failure</td><td></td></tr>
    343. 

  343.   </table>
    344. 

  344.   </dd>
    345. 

  345. </dl>
    346. 

  346. 

  347. </div>
    348. 

  348. </div>
    349. 

  349. <a id="ga9b5ae3d12c73aa1d81245fd5f8772847"></a>
    350. 

  350. <h2 class="memtitle"><span class="permalink"><a href="#ga9b5ae3d12c73aa1d81245fd5f8772847">&#9670;&nbsp;</a></span>read_view()</h2>
    351. 

  351. 

  352. <div class="memitem">
    353. 

  353. <div class="memproto">
    354. 

  354. <table class="mlabels">
    355. 

  355.   <tr>
    356. 

  356.   <td class="mlabels-left">
    357. 

  357.       <table class="memname">
    358. 

  358.         <tr>
    359. 

  359.           <td class="memname">void boost::gil::read_view </td>
    360. 

  360.           <td>(</td>
    361. 

  361.           <td class="paramtype">Reader&#160;</td>
    362. 

  362.           <td class="paramname"><em>reader</em>, </td>
    363. 

  363.         </tr>
    364. 

  364.         <tr>
    365. 

  365.           <td class="paramkey"></td>
    366. 

  366.           <td></td>
    367. 

  367.           <td class="paramtype">View const &amp;&#160;</td>
    368. 

  368.           <td class="paramname"><em>view</em>, </td>
    369. 

  369.         </tr>
    370. 

  370.         <tr>
    371. 

  371.           <td class="paramkey"></td>
    372. 

  372.           <td></td>
    373. 

  373.           <td class="paramtype">typename std::enable_if&lt; mp11::mp_and&lt; detail::is_reader&lt; Reader &gt;, typename is_format_tag&lt; typename Reader::format_tag_t &gt;::type, typename <a class="el" href="structboost_1_1gil_1_1is__read__supported.html">is_read_supported</a>&lt; typename get_pixel_type&lt; View &gt;::type, typename Reader::format_tag_t &gt;::type &gt;::value &gt;::type *&#160;</td>
    374. 

  374.           <td class="paramname"> = <code>nullptr</code>&#160;</td>
    375. 

  375.         </tr>
    376. 

  376.         <tr>
    377. 

  377.           <td></td>
    378. 

  378.           <td>)</td>
    379. 

  379.           <td></td><td></td>
    380. 

  380.         </tr>
    381. 

  381.       </table>
    382. 

  382.   </td>
    383. 

  383.   <td class="mlabels-right">
    384. 

  384. <span class="mlabels"><span class="mlabel">inline</span></span>  </td>
    385. 

  385.   </tr>
    386. 

  386. </table>
    387. 

  387. </div><div class="memdoc">
    388. 

  388. 

  389. <p>Reads an image view without conversion. No memory is allocated. </p>
    390. 

  390. <dl class="params"><dt>Parameters</dt><dd>
    391. 

  391.   <table class="params">
    392. 

  392.     <tr><td class="paramname">reader</td><td>An image reader. </td></tr>
    393. 

  393.     <tr><td class="paramname">view</td><td>The image view in which the data is read into. </td></tr>
    394. 

  394.     <tr><td class="paramname">settings</td><td>Specifies read settings depending on the image format. </td></tr>
    395. 

  395.   </table>
    396. 

  396.   </dd>
    397. 

  397. </dl>
    398. 

  398. <dl class="exception"><dt>Exceptions</dt><dd>
    399. 

  399.   <table class="exception">
    400. 

  400.     <tr><td class="paramname">std::ios_base::failure</td><td></td></tr>
    401. 

  401.   </table>
    402. 

  402.   </dd>
    403. 

  403. </dl>
    404. 

  404. 

  405. </div>
    406. 

  406. </div>
    407. 

  407. </div><!-- contents -->
    408. 

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